Orthodontic implement



March 12, 1946. 2,396,619

ii Ii sTRAYE'R ORTHODONT'IQ IMPLEMENT Filed Jan. 10, 1944 Patented Mar.12, 1946 ORTHODONTIC IMPLEMENT Edward Ray Strayer, ()reland, Pa.,assignor to The S. S. White Dental Manufacturing Company, a corporationof Pennsylvania Application January 10, 1944, Serial No. 517,689

2 Claims.

My invention relates particularly to that class of orthodonticimplements that are adapted to form an arch-bar by providing bendstherein at such predetermined regions that are indicated by the malposedteeth of the dental arch to be corrected.

It is highly essential in preforming an archbar that the relativelyadjacent regions of the arch-bar bear such definite angular relation asis best suited to the correction of position of the particular malposedtooth of the dental arch that each individual region is adapted to beattached for corrective purposes, whether it be for tilting, rotating orother positioning of such tooth.

The principal objects of my invention are to provide bending pliers withcircularly graduated means serving as a guide by which the relativelyangular adjacent regions of the arch-bar may be alined while being heldbetween the opposed beaks of said pliers to effect the bending actionwhereby the desired shape of the preformed archbar is produced.

Other objects of my invention are to provide each of the relativelyopposed beaks of a pair of wire bending pliers with transverselyextending webs, the forward surfaces of which coincide with a commontransverse plane when said beaks are in their normally closed position,and in which position said webs cooperate to provide a continuousforward plane surface.

Further objects of my invention are to provide the respective beaks of apair of bending pliers with plane surfaces to which angle plates may beconveniently secured with their forward webs disposed in spaced relationto the forward end or nose of said beaks and in a common transverselyextended plane when said beaks are in their normally closed position.

My invention includes a pair of wire bending pliers having each of thebeaks thereof provided with a transversely projecting web preferably inthe form of a quadrant which together afford a semicircular common planesurface, when said beaks are relatively closed, which. surface isprovided with radially extended scribe lines, with any one of which awire may be caused to conform when engaged between said beaks, so as toproduce a bend therein of any desired degree.

Specifically stated, my invention comprehends a pair of pliers whosebeaks each provide a flat surface relatively disposed in a commonlongitudinally extended plane, to which surface one flange of an anglebracket is secured whil e the other flange projects outwardly therefrom;the

spective view of a pair of pliers conveniently embodying my invention;Fig. 2 is a side elevational view of the pliers shown in Fig. 1; Fig. 3is a plan view of said pliers showing the beaks and the transverselydisposed scribed webs in normally closed position; Fig. 4 is an endelevational view of said pliers as viewed from the left of Fig. 1, butshowing the beaks slightly separated and holding an arch-bar engagedtherebetween; Fig. 5 is a plan view of the arch-bar shown in Fig. 4; andFig. 6 is a perspective view of one of the angle brackets which affordsthe scribed webs as shown attached to the respective beaks of the pliersi1- lustrated in Figs. 1 to 4 inclusive.

In said figures, the relatively movable members 9 and I0 forming thepliers are pivoted at II and respectively have the rearwardly extendinghandles I2 and I3, and the forwardly projecting opposed beaks I5 and I6.The beak I5 is provided with the plane under surface I! and the beak I6is similarly provided with the plane under surface I9 which surfaces aredisposed in a common horizontal plane.

The beak I5 is provided with the scribed guide which may preferably bein the form of the angle bracket 20 having the horizontally extendedflange 2| which may be conveniently engaged with the plane under surfaceI! of said beak I5, as shown in Figs. 1 to 4 inclusive, by solder,welding or other suitable means, in such position, see Figs. 1 to 3,that its depending flange or web 22 will be suitably spaced from theforward end or nose 23 of the beak I5 as to afford sufficient length ofthe beak to readily engage the archbar 25 in the manner indicated inFig. 4.

Similarly, the beak I6 is provided with the scribed guide in the form ofthe angle bracket 30 having the horizontally extended flange 3| whichmay be engaged with the plane under surface I9 of said beak I6 in suchposition as to cooperate with the angle bracket 20, so that when saidbeaks I5 and I6 are in their normally closedpositicn the dependingflange or web 32 of the bracket 30 and the flange or web 22 of thebracket 20 will be coincident with a vertical plane disposed transverseto said beaks l5 and I6.

As shown in Figs. 4 and 6, the depending flange or web 22 may preferablybe in the form of a quadrant and has its forward surface scribed withlines 35 radiating from the angle 36 of said quadrant, which angle, itwill be noted, is coincident with the lower inner edge 3'! of the beakI5 about which the arch-bar 25 is bent, a indicated in Fig. 4.

Similarly, the depending flange or web 32, as best shown in Fig. 4, isin the form of a quadrant and has its forward surface scribed lines 39radiating from the angle 40 of said quadrant, which angle is coincidentwith the lower inner edge 4! of the beak [6 about which the arch-bar maybe reversely bent, as indicated at 42 and 43 on said arch-bar in Fig. 4.

It may be here noted that when the beak-s l5 and I6 are disposed in theinormally closed position, as indicated in Figs. 1 and 3, the adjacentedges 45 and 46 of the webs 22 and 32 will also close together and forma semicircular guide plate whose composite surface forms a planetransverse to the beak-s l5 and I 6, and Whose outer edges substantiallyconform to a portion of a circle, so that the operator may maintain hisbending grasp on the arch-bar as close as possible to the point ofbending of said arch-bar irrespective of the angular position of thebent portion of said arch-bar.

I do not desire to limit my invention to the precise details ofconstruction and arrangement as herein set forth, as it is obvious thatvarious modifications may be made therein without departing from theessential features of my invention as defined in the appended claims.

Having thus described my invention, I claim:

1. A pair of wire bending pliers having opposed beaks, each beingprovided with a guide plate spaced from the forward end thereof andclosely adjacent thereto and disposed in a plane transverse to saidbeaks, and graduations on each of said guide plates extending radiallyfrom the point of intersection of said plate with the inner edge of saidbeak and serving to determine the angle of bend of wire held betweensaid beaks.

2. A pair of wire bending plier having opposed flat-faced beaks, eachbeing provided with a guide plate extending at right angles from theface thereof, each of said guide plates having a curved outer edge andhaving graduations xtending radially from the point of intersection ofsaid plate with the inner edge of said beak and serving to determine theangle of bend of wire held between said beaks.

EDWARD RAY STRAYER.

